init

2 files changed, 41 insertions, 0 deletions

diff --git a/options/options.go b/options/options.go
new file mode 100644
index 0000000..e058559
--- /dev/null
+++ b/options/options.go
@@ -0,0 +1,22 @@
+/*******************************************************************************
+* Copyright 2025 Stefan Majewsky <majewsky@gmx.net>
+* SPDX-License-Identifier: Apache-2.0
+* Refer to the file "LICENSE" for details.
+*******************************************************************************/
+
+// Package options provides additional functions for type option.Option
+// that cannot be expressed as methods on the Option type itself.
+package options
+
+import . "github.com/majewsky/gg/option"
+
+// NOTE: Keep functions sorted by name.
+
+// FromPointer converts a *T into an Option[T].
+func FromPointer[T any](value *T) Option[T] {
+	if value == nil {
+		return None[T]()
+	} else {
+		return Some(*value)
+	}
+}
diff --git a/options/options_test.go b/options/options_test.go
new file mode 100644
index 0000000..69a4b43
--- /dev/null
+++ b/options/options_test.go
@@ -0,0 +1,19 @@
+/*******************************************************************************
+* Copyright 2025 Stefan Majewsky <majewsky@gmx.net>
+* SPDX-License-Identifier: Apache-2.0
+* Refer to the file "LICENSE" for details.
+*******************************************************************************/
+
+package options
+
+import (
+	"testing"
+
+	. "github.com/majewsky/gg/internal/test"
+	. "github.com/majewsky/gg/option"
+)
+
+func TestFromPointer(t *testing.T) {
+	AssertEqual(t, FromPointer[int](nil), None[int]())
+	AssertEqual(t, FromPointer(PointerTo[int](42)), Some(42))
+}